Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3a6efe6225e0c0…

MALICIOUS

PDF

44.8 KB Created: 2020-10-30 10:01:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3a3702b0e31c63c0323335be1e4f5063 SHA-1: ab6d90b30c3e3511e5b78ca379e0fbe784d47e51 SHA-256: cc3a6efe6225e0c02faebc8fdc451d58dd07e47cf1d7e6c3d0f175db4ebe3b56
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/aws?keyword=minecraft+apk+14.0 In PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/zirilapalir-bisojexowesomes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/45545c5e-592b-46ff-a980-e51b2c45cc37/kapeladubikebofimiwuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/cheats_of_gta_san_andreas_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/914254d7-3149-46b4-ada6-972cf21482bd/82176666598.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/11227562925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84745e2f-cddd-4dab-820e-66c6ff61b4eb/18984189688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9db41065-8796-4668-b496-b246e1ac9c34/74408938016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c91804e-a9ee-4f3e-bf86-6d7ec15751cb/62518609467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d364babe-c9f2-409a-9983-bc4baeea9150/6328415192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c668574-2915-4804-b69b-4e7374249db8/pefuvilivixido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9761/9109/files/73224877459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5293/3021/files/what_is_absolute_temperature_of_a_body.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d541cedb-ce20-4318-83f4-d4cf75ad0731/zeweredexolusaf.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F5 5184 bytes
SHA-256: a9077a747161bd1d9c610486ea86b3c082c53078eed2dc62219c5f15eb456e5c
font_01_sfnt_off000082ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CA 10576 bytes
SHA-256: efb5570a1717f5d2dd2b19597e832c6d1753aefa1efa21125ebf22540408ab54

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